313440231 has 16 divisors (see below), whose sum is σ = 450860256. Its totient is φ = 192546816.

The previous prime is 313440217. The next prime is 313440247. The reversal of 313440231 is 132044313.

It is not a de Polignac number, because 313440231 - 2¹⁰ = 313439207 is a prime.

It is a super-2 number, since 2×313440231² = 196489556818666722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 313440198 and 313440207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313440031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16351 + ... + 29903.

It is an arithmetic number, because the mean of its divisors is an integer number (28178766).

Almost surely, 2^313440231 is an apocalyptic number.

313440231 is a deficient number, since it is larger than the sum of its proper divisors (137420025).

313440231 is a wasteful number, since it uses less digits than its factorization.

313440231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14162.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 313440231 is about 17704.2433049255. The cubic root of 313440231 is about 679.2843039476.

Adding to 313440231 its reverse (132044313), we get a palindrome (445484544).

It can be divided in two parts, 3134 and 40231, that added together give a triangular number (43365 = T₂₉₄).

The spelling of 313440231 in words is "three hundred thirteen million, four hundred forty thousand, two hundred thirty-one".